Developing flower head of Globe artichoke, Cynara scolymus.

Thistle, Spear thistle, Scotch thistle, Bull thistle, Cirsium vulgare.

Cardoon, Cynara cardunculus.

Sea Holly, Eryngium alpinum.

Sea Holly, Eryngium alpinum.

Thistle, Spear thistle, Scotch thistle, Bull thistle, Cirsium vulgare.

Globe Thistle, Echinops bannaticus.

Globe Thistle, Echinops bannaticus.

Globe Thistle, Echinops bannaticus.

Globe Thistle, Echinops.

Artichoke, Cynara scolymus.

Artichoke, Cynara scolymus.